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Updated: Jul 10, 2025
Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Hydrogen-Tolerant La0.6Ca0.4Co0.2Fe0.8O3- Oxygen Transport Membranes from Ultrasonic Spray Synthesis for
Aasir Rashid1, Hyunjung Lim1, Daniel Plaz2
1Research Division of Materials & Resources, Technical University of Darmstadt, Peter-Grünberg-Str. 2, 64287 Darmstadt, Germany.
Abstract:
La0.6Ca0.4Co1-FeO3- in its various compositions has proven to be an excellent CO2-resistant oxygen transport membrane that can be used in plasma-assisted CO2 conversion. With the goal of incorporating green hydrogen into the CO2 conversion process, this work takes a step further by investigating the compatibility of La0.6Ca0.4Co1-FeO3- membranes with hydrogen fed into the plasma. This will enable plasma-assisted conversion of the carbon monoxide produced in the CO2 reduction process into green fuels, like methanol. This requires the La0.6Ca0.4Co1-FeO3- membranes to be tolerant towards reducing conditions of hydrogen. The hydrogen tolerance of La0.6Ca0.4Co1-FeO3- (x = 0.8) was studied in detail. A faster and resource-efficient route based on ultrasonic spray synthesis was developed to synthesise the La0.6Ca0.4Co0.2Fe0.8O3- membranes. The La0.6Ca0.4Co0.2Fe0.8O3- membrane developed using ultrasonic spray synthesis showed similar performance in terms of its oxygen permeation when compared with the ones synthesised with conventional techniques, such as co-precipitation, sol-gel, etc., despite using 30% less cobalt.
